Please use this identifier to cite or link to this item:
Files in This Item:
There are no files associated with this item.
Title: Growth and natural mortality of <i>Maurolicus muelleri</i> and <i>Benthosema glaciale</i> in the Northeast Atlantic Ocean
Authors: Vastenhoud, Berthe M. J.; Mildenberger, Tobias K.; Kokkalis, Alexandros; Paoletti, Silvia; Alvarez, Paula; Garcia, Dorleta; Wieczorek, Alina M.; Klevjer, Thor; Melle, Webjorn; Jonsson, Sigurour T.; Nielsen, J. Rasmus
Abstract: Mesopelagic fish are considered a possible future fisheries resource, but the biological sustainability of their potential exploitation has not yet been assessed. Sustainability should be evaluated at the population level, for which accurate stock-specific life-history parameters are required. Here, we use a length-based model to estimate life-history parameters related to growth and natural mortality, and their uncertainty, for the assessment of Northeast Atlantic populations of Maurolicus muelleri (Gmelin, 1789, Mueller's Pearlside) and Benthosema glaciale (Reinhardt, 1837, glacier lantern fish). We compare three different approaches to estimate natural mortality rates and provide recommendations for future data collection and monitoring programs. For M. muelleri, we estimated an asymptotic length of 57.98 mm and a von Bertalanffy growth constant of 1.28 year(-1), while for B. glaciale, we estimated an asymptotic length of 78.93 mm and a von Bertalanffy growth constant of 0.41 year(-1). Estimates of natural mortality rates for M. muelleri were around 1.29 year(-1) and 1.80 year(-1) based on empirical formulae with the estimated growth parameters and maximum age, respectively, and around 1.51 year(-1) with the length-converted catch curve method for B. glaciale estimates ranged between 0.5, 0.68, and 0.75 year(-1), with the three respective methods. Due to limited data availability, the estimated uncertainty of the provided life-history parameters is large and should be considered in the evaluation of the sustainability of potential mesopelagic exploitation following the precautionary approach.
Keywords: Maurolicus muelleri; Benthosema glaciale; TropFishR; length-based assessment; mesopelagic zone; data-limited stock assessment methods; Von Bertalanffy growth function; natural mortality; MESOPELAGIC FISH; VERTICAL-DISTRIBUTION; LIFE-HISTORY; SIZE; LANTERNFISH; PARAMETERS; PEARLSIDE; AVOIDANCE; PATTERNS; BEHAVIOR
Issue Date: 2023
Type: Article
DOI: 10.3389/fmars.2023.1278778
E-ISSN: 2296-7745
Funder: EU H2020 MEESO Project ``Ecologically and Economically Sustainable Mesopelagic Fisheries�� [817669, 33113-B-20-183]
European Maritime and Fisheries Fund
Danish Fisheries Agency
Appears in Publication types:Artículos científicos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.